▎ 摘　　要

NOVELTY - Non-metallic graphene-based composite wave absorbing material comprises reduced graphene oxide and small molecule anthraquinone compound material compounded on the surface of reduced graphene oxide. USE - Used as non-metallic graphene-based composite wave absorbing material. ADVANTAGE - The method: is simple to operate and convenient for large-scale production; can be regulated the electrical conductivity of reduced graphene oxide by changing the content of small-molecule anthraquinone compounds; realizes the regulation of its wave-absorbing properties; and solves the shortcomings of high density, narrow absorbing frequency band and poor corrosion resistance of the current ferromagnetic metal-based wave absorbing materials, and the problems of graphene agglomeration in the secondary composite process. The composite wave absorbing material: has good wave absorbing performance; does not contain metal; and retains the lightweight characteristics of the graphene material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a preparation method of reduced graphene oxide/small molecule anthraquinone compound composite material comprising (A) magnetically stirring after premixing the small molecule anthraquinone compound with the graphene oxide aqueous solution to obtain a precursor solution, (B) transferring the precursor solution to the polytetrafluoroethylene reactor, and placing into a blast drying oven for hydrothermal treatment, and (C) freeze-drying the reduced graphene oxide/small molecule anthraquinone compound composite hydrogel to obtain the reduced graphene oxide/small molecule anthraquinone compound composite aerogel; and (2) a wave absorbing material comprising reduced graphene oxide/small molecule anthraquinone compound composite material or the reduced graphene oxide/small molecule anthraquinone compound composite material.